Vacuum-sweeper



C. P'. BROCKWAY.y

v-AcuuM swEEPER.

APPLICATION FILED JAN.23, 1919. 1,361,563, Patented Deo. 7, 1920.

2 SHEETS-SHEET l.

UNITED STATES 1 Affra1srr OFFICE.

CARL P. naocxwAY, or ToLEDo, onto, As'sIGNoRfro INDUSTRIAL RESEARCH conreaA'rIoN, 0E TOLEDO, omo, A coRPonArIoN or DELAWARE.

-vAcUUM-swEErEB.

To all whom t may concern.'

Be it known that I, CARLI. BRocKwAY,

This invention relates to improvements in s uctlon sweepers, and in particular to 1mprovements upon the constructions shown in my co-pending applications, Serial Numbers 27 2726 and 272727. Y

The lprincipal objectv of the 'invention is to provide means for causing a succession of 'movements of the air inlet across the mouth of the nozzle.l By such movements pulsations in the suction are produced, which greatly enhance ther effectiveness -of the sweeping operation by `agitating the fabric being cleaned, and also preventing the threadsin the long nap of a'carpet for instance, from being drawn .together at the.

top and acting as a barrier agalnst the move- Ament of dust particles embedded in the car- `petlower down.

Another object of the invention is the provision of means which will accomplish the succession of movements of 4the air inlet without any movement vof the nozzle itself. A- further obj ect is the provision of means for driving the inlet moving rneans from the lexhaust'fan. l

' Still otherobje'cts, and objects relating to details of construction and economies of manufacture, will appear as I roceed with the .description of that eml-o'dlment of the invention which, for theY purposes ofthe present application I have illustratedin the accompanying drawings, in which,

FigureI is a side elevational view of a suction sweeper embodying my invention.v

Fig. II isa view similar to Fig..I, parts of the casing being broken away tol better illustrate the inventionw Fig. III'is a bottom plan view..

Fig. IV is a vertical cross section'talren i substantially on the line IV-JV, A

Fig. V is a detailed sectional view on the line V-f-V, Fig. IV.

Fig. VI is a view similar tothat of Fig. lIV b ut showing a modified form of rotating.'

cylinder.' l Similar reference characters refer tg similar parts throughout the views..

Specification of Letters Patent.:

interrupted however, for

`ings into the 'of any suitable handle,

I17, held in position byk a ylatch 18, may be employed,

in order that a connection may be made witha flexible 'tube to which auxiliarycleaning nozzles of different shapes may be attached. At such times the mouth 1 9 Patented Dec. 7,1920. Application nica :anuaiy- 23, 1919. serial No. 272,725.-

sol

of the nozzle 16 must be closed by'some means, not shown. These latter lfeatures are well known in the art and'constitute no part of myl invention. They are shown and described as merely incidental to the construction illustrated.

The machine is mounted formovement over the floor, being supported at the rearupon a two wheeled caster 20, and at the front directly behind thenozzle upon two traction wheels 21. y

'In the ends of the nozzle 16 are ball bear ings 22 which rotatably supporta cyllnder 23, preferably constructed of sheet metal.

and provided intermediate its lengthfwith a circumferentially, depressed portion 24, forming a belt groove in which runs a-belt- 25, theA latterbeing driven by a pulley 26 mounted upon the lower end of the. motor 'shaft 27, which preferably carries the fan l0'also. The greater part of the space with-- in the nozzle 16 is filled with the cylinder 23, which completely bridges the mouth 19 of the nozzle. The suction is not entirely air is permitted to enterl from the mouth 19 throu ings in the cylinder, and to pass rom the' interior ot* the cylinder throu h other openchamberl .15 an thence to the exhaust fan. to usev are longitudinal slots which maybe parallel to the axisv of the .cylinder as shown at 28 in Fig. VI-or oblique as shown at 29 in Fig. 1v.

h open- The openings that I prefer 'In the operation.. of .my invention, 'the l sweeper is moved motor being set in motion drives the fan 10 to create suction and the belt 25 toroover the ioor by meansl not shown, and the p one slot28 'or 29 so disposed asto permit the entry of air into the machine. The

v rapid motion of these slots across .the mouth of the nozzle produces the desired effect of agitating the. threads of the fabric beingcleaned, thereby greatly assisting in the operation of removing the dust particles.

WVhile I have described my invention in' more or less detail andas being embodied 'in certain forms, Iido not desire or intend to be limited thereto, as quite to the contrary, my invention contemplates any proper changes in the form, construction Vand arrangement oi"l parts aS well as the omission of immaterial lelements and certain cooperating parts and the substitution of equivalents therefor, as circumstances may suggest or necessity render expedient.

I claim as my invention: l. In a suction sweeper, a suction creating means, a nozzle, a chamber providing a passageway between said suction creating means and nozzle, a rotatable'cylindrical shell mounted in said nozzle and provided with openings through which air must pass in moving towardsaid suction creating means and' means for rotating said shell.

2. In a suction sweeper,a suction creating means, a nozzle, a chamber p'oviding a passageway between said suction creating means and nozzle, a rotatable cylinder mounted in said nozzle and extending over the mouth thereof, said cylinder being provided with longitudinal slots and being impervious elsewhere, and means for rotating said cylinder;

3. In a suctionsweeper, a suction creat-- ing means, a nozzle, achamber providing a passageway between said suction creatlng means and nozzle, a rotatable cylinder.

mounted in said nozzle and extending over the mouth thereof, said cylinder being lformed of' impervious material and being provided with longitudinal slots separated by spaces of less width than the width of the mouth of the nozzle, and means-*for rotating said cylinder.

4. In a suction sweeper, a suction creating means, a nozzle, a'chamber providing a Jia-ssageway between said suction creating means and nozzle, a rotatable cylinder formed #of impervious material mounted in said nozzle and extendlng overthe mouth thereof, said'cylinder being provided with` obliquely arranged, longitudinally extending slots, and means for rotating said cyl- 1n er.

5. In a suction sweeper, a suction fan, a nozzle, a chamber provldmg a passageway v CARL P. BRooKwAY; 

